/Engine/Plugins/AudioGameplayVolume/Source/AudioGameplayVolume/Public/AudioGameplayVolumeSubsystem.h
FAudioGameplayVolumeProxyInfo- Holds information relating to which volumes our listeners are inside of
class FAudioGameplayVolumeProxyInfo
TSet< uint32 >
CurrentProxies
TArray< int32 >
ListenerIndexes
TSet< uint32 >
PreviousProxies